4. exert v. 施加
近义表达
exert sth on sb /sth to do sth: bring (a quality,skill,pressure,etc) into use; apply sth.
Eg.: His wife exerted a lot of pressure on him to change his job.
He likes to exert his authority on us.
exert oneself 努力,尽力(不能用于被动)
Eg.: He never exerted himself to study hard.
exert/make every effort 尽一切努力
5. subtle adj. 微妙的,难以捉摸的=hardly noticeable;敏感的,敏锐的
Eg.: Advertisements exert subtle influence on us.
He is a subtle observer.
联想记忆
subtly adv.微妙地,敏锐地
subtleness == subtlety